TY - JOUR
T1 - Sanky (Corryocactus brevistylus) peel as low-cost adsorbent for removal of phosphate from aqueous solutions
AU - Contreras-López, Eliana
AU - Kiyan, Victor Miyashiro
AU - Cerrón, Jaime Porras
AU - Muñoz, Ana María
AU - Ramos-Escudero, Fernando
AU - Portuguez-Maurtua, Marcelo
AU - Yuli-Posadas, Ricardo
AU - Garayar-Tasayco, Humberto
N1 - Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/8/2
Y1 - 2021/8/2
N2 - This study aimed to evaluate the adsorption capacity of an adsorbent obtained using sanky peel for the removal of phosphate from aqueous solutions. The study was conducted in two stages: (1) adsorbent preparation considering yield, phosphate removal, adsorption capacity, and textural characteristics; (2) an assessment of the effectiveness of using sanky peel as an adsor-bent for removing phosphates from aqueous solutions. Batch adsorption was studied in aqueous solutions containing phosphate and calcium ions with the selected adsorbent. Adsorption kinetics and equilibrium isotherms were studied using mathematical models. The adsorption kinetics followed the pseudo-second-order, Elovich, and Weber–Morris models, thus demonstrating that adsorption rates were not controlled by multiple processes. Adsorption equilibrium data fitted best with the Dubinin–Radushkevich model. Finally, a Fourier transform infrared spectroscopy analysis revealed the presence of brushite spectra bands after adsorption. The results of this study can help better understand the use of sanky peel as an adsorbent and good alternative for aqueous phosphate adsorption.
AB - This study aimed to evaluate the adsorption capacity of an adsorbent obtained using sanky peel for the removal of phosphate from aqueous solutions. The study was conducted in two stages: (1) adsorbent preparation considering yield, phosphate removal, adsorption capacity, and textural characteristics; (2) an assessment of the effectiveness of using sanky peel as an adsor-bent for removing phosphates from aqueous solutions. Batch adsorption was studied in aqueous solutions containing phosphate and calcium ions with the selected adsorbent. Adsorption kinetics and equilibrium isotherms were studied using mathematical models. The adsorption kinetics followed the pseudo-second-order, Elovich, and Weber–Morris models, thus demonstrating that adsorption rates were not controlled by multiple processes. Adsorption equilibrium data fitted best with the Dubinin–Radushkevich model. Finally, a Fourier transform infrared spectroscopy analysis revealed the presence of brushite spectra bands after adsorption. The results of this study can help better understand the use of sanky peel as an adsorbent and good alternative for aqueous phosphate adsorption.
KW - Adsorbent
KW - Isotherms
KW - Kinetics
KW - Phosphate
KW - Sanky peel
UR - http://www.scopus.com/inward/record.url?scp=85112686092&partnerID=8YFLogxK
U2 - 10.3390/su13168994
DO - 10.3390/su13168994
M3 - Artículo
AN - SCOPUS:85112686092
SN - 2071-1050
VL - 13
JO - Sustainability (Switzerland)
JF - Sustainability (Switzerland)
IS - 16
M1 - 8994
ER -
